1242265 has 8 divisors (see below), whose sum is σ = 1515528. Its totient is φ = 977280.

The previous prime is 1242251. The next prime is 1242271. The reversal of 1242265 is 5622421.

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 1190281 = 228^2 + 1091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1242265 - 2⁵ = 1242233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (189441).

2^1242265 is an apocalyptic number.

It is an amenable number.

1242265 is a deficient number, since it is larger than the sum of its proper divisors (273263).

1242265 is an equidigital number, since it uses as much as digits as its factorization.

1242265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139.

The product of its digits is 960, while the sum is 22.

The square root of 1242265 is about 1114.5694235892. The cubic root of 1242265 is about 107.4990805762.

Adding to 1242265 its product of digits (960), we get a square (1243225 = 1115²).

Adding to 1242265 its reverse (5622421), we get a palindrome (6864686).

The spelling of 1242265 in words is "one million, two hundred forty-two thousand, two hundred sixty-five".